Wiktionary
pantoum
n. A poem, similar to a villanelle, that comprises a series of quatrains, the second and fourth lines of each stanza repeated as the first and third lines of the next.
Wikipedia
Usage examples of "pantoum".
Following the example of one of his comrades of Medan, being readily carried away by precision of style and the rhythm of sentences, by the imperious rule of the ballad, of the pantoum or the chant royal, Maupassant also desired to write in metrical lines.